Intelligent metasurface test fixture and device

Abstract

The invention discloses an intelligent metasurface testing jig and device, and relates to the technical field of wireless communication, the intelligent metasurface testing jig comprises a guide rail assembly, a first supporting piece and two second supporting pieces, the guide rail assembly comprises two linear guide rails, the two linear guide rails can relatively rotate by taking a first axis as an axis to adjust an included angle theta, and the first supporting piece and the second supporting piece are arranged on the guide rail assembly; the value of theta is more than or equal to 10 degrees and less than or equal to 350 degrees; the first supporting piece is arranged at the first axis and is used for supporting the intelligent metasurface antenna; the two second supporting pieces are arranged on the two linear guide rails respectively and used for supporting the signal transmitting piece and the signal receiving piece respectively. The intelligent metasurface test fixture and the intelligent metasurface test device provided by the technical scheme of the invention aim at improving the universality of the intelligent metasurface test fixture and the intelligent metasurface test device.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to an intelligent metasurface testing fixture and apparatus. Background Technology

[0002] Reconfigurable Intelligent Surfaces (RIS) are an emerging technology that utilizes artificial composite materials and specially designed periodic structures to powerfully manipulate electromagnetic and light waves. This technology has broad application prospects in next-generation wireless communications, optical lenses and imaging, radar, and stealth applications.

[0003] At multiple stages of the manufacturing process of smart metasurfaces, performance testing is required to verify the effectiveness of performance indicators such as coverage area, signal strength enhancement, and data transmission rate improvement. However, the devices used for performance testing of smart metasurfaces in related technologies typically require customized testing equipment based on the different operating modes of the smart metasurfaces, resulting in poor versatility. Summary of the Invention

[0004] The main objective of this invention is to provide an intelligent metasurface testing fixture and apparatus, aiming to improve the versatility of the intelligent metasurface testing fixture and apparatus.

[0005] To achieve the above objectives, embodiments of the present invention provide an intelligent metasurface testing fixture, which includes a guide rail assembly, a first support member, and two second support members. The guide rail assembly includes two linear guide rails, which can rotate relative to each other with an included angle θ around a first axis, wherein the value of θ satisfies: 10°≤θ≤350°. The first support member is disposed at the first axis and is used to support the intelligent metasurface antenna. The two second support members are respectively disposed on the two linear guide rails and are used to support the signal transmitter and the signal receiver, respectively.

[0006] In some embodiments, two linear guide rails are spaced apart, and the first axis is located at the intersection of the lines of the two linear guide rails. Two second support members are slidably connected to the two linear guide rails respectively.

[0007] In some embodiments, the guide rail assembly further includes a connector that is connected to a straight guide rail and movably connected to a first support member.

[0008] In some embodiments, the first support member includes a first support rod with a first axis as its axis, and the connector is provided with a relief groove, wherein the first support rod abuts against the inner wall of the relief groove.

[0009] In some embodiments, the first support member further includes a base, a first support rod is connected to the base, and the base is provided with an annular scale with the first axis as the center line; the connector is detachably connected to the base and includes an observation hole, the observation hole and at least a portion of the annular scale overlap in a direction parallel to the first axis.

[0010] In some embodiments, the first support further includes a first bracket, which includes a first base plate, two first side plates and a plurality of first fasteners. The first base plate is connected to a first support rod, and the two first side plates are connected to the first base plate and disposed opposite to each other. The plurality of first fasteners are disposed on the first side plates and can be advanced along the relative arrangement direction of the two first side plates to clamp the smart metasurface antenna.

[0011] In some embodiments, the first support member further includes a first bracket and a first movable rod, the first movable rod being connected to the first bracket; the first support rod is a hollow rod, the first movable rod is coaxial with the first support rod, and is slidably and / or rotatably connected to the first support rod about a first axis.

[0012] In some embodiments, the intelligent metasurface testing fixture further includes a sliding block that is slidably connected to a linear guide rail and connected to a first support and a second support.

[0013] In some embodiments, the first support member is fixed to the end of a linear guide rail by a sliding block. When the two linear guide rails are on the same straight line, the minimum distance between the ends of the two linear guide rails is s, the dimension of the sliding block along the width direction of the linear guide rail is a, and the dimension of the sliding block along the length direction of the linear guide rail is b; then the values ​​of s, a, and b satisfy the following formula:

[0014] In some embodiments, the second support member includes a sleeve assembly and a second bracket. The sleeve assembly includes a second support rod and a second movable rod. The second support rod is a hollow rod, and the second movable rod is coaxial with the second support rod and slidably connected to the second support rod. The second bracket is connected to the second movable rod.

[0015] In some embodiments, the second bracket includes a second base plate, two second side plates and a second fastener. The second base plate is connected to a second movable rod, and the two second side plates are connected to the second base plate and disposed opposite to each other. The second fastener is slidably connected to the two second side plates and disposed opposite to the second base plate in a direction parallel to the first axis.

[0016] In some embodiments, the guide rail assembly, the first support member, and the second support member are all made of non-metallic materials.

[0017] This invention also provides an intelligent metasurface testing device, which includes a signal transmitter, a signal receiver, and an intelligent metasurface testing fixture as provided in any of the foregoing embodiments. The signal transmitter and the signal receiver are respectively disposed on two second supports.

[0018] The technical solution of this invention includes a guide rail assembly comprising two linear guide rails, which can rotate relative to each other around a first axis to adjust the included angle θ, with the value of θ controlled to be 10°≤θ≤350°. Two second supports for supporting the signal transmitter and receiver are respectively disposed on the two linear guide rails, and the first support is disposed at the first axis. Therefore, by changing the value of the included angle θ between the two linear guide rails, the positional relationship between the signal transmitter / receiver and the smart metasurface antenna during testing can be altered. Thus, when the smart metasurface antenna under test is a reflective type, the included angle θ between the two linear guide rails can be adjusted to 10°≤θ≤90° or 270°≤θ≤350° to test the performance of the reflective smart metasurface antenna; when the smart metasurface antenna under test is a transmissive type, the included angle θ between the two linear guide rails can be adjusted to 90°≤θ≤270° to test the performance of the transmissive smart metasurface antenna, thereby improving the versatility of the smart metasurface testing fixture. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of an intelligent metasurface testing device provided in an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 Enlarged view of part A of the intelligent metasurface testing device shown;

[0022] Figure 3 This is a schematic diagram of the planar structure of the connector in an intelligent metasurface testing fixture provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the cooperation structure between the first support member and the intelligent metasurface antenna in an embodiment of the present invention.

[0024] Figure 5 yes Figure 4The enlarged view of part B of the surface testing fixture shown;

[0025] Figure 6 This is a schematic diagram of the connection structure between the second support member and the signal transmitter in an intelligent metasurface testing fixture provided in an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the connection structure between the second support and the second movable rod in an intelligent metasurface testing fixture provided in an embodiment of the present invention;

[0027] Figure 8 This is a top view of an intelligent metasurface testing device provided in another embodiment of the present invention;

[0028] Figure 9 yes Figure 8 Enlarged view of section C of the intelligent metasurface testing device shown;

[0029] Figure 10 yes Figure 8 Enlarged view of part D of the intelligent metasurface testing device shown;

[0030] Figure 11 This is a schematic diagram showing the positional relationship between two linear guide rails in an intelligent metasurface testing fixture provided in an embodiment of the present invention;

[0031] Figure 12 This is a schematic diagram showing the positional relationship of two linear guide rails in an intelligent metasurface testing fixture provided in another embodiment of the present invention;

[0032] Figure 13 This is a schematic diagram showing the positional relationship of two linear guides in an intelligent metasurface testing fixture provided in an embodiment of the present invention when the θ value is minimized.

[0033] Explanation of icon numbers:

[0034] 1000. Intelligent metasurface testing device; 200. Signal transmitter; 300. Signal receiver; 400. Intelligent metasurface antenna;

[0035] 100. Intelligent metasurface testing fixture;

[0036] 10. Guide rail assembly; 11. Linear guide rail; 111. Spacing scale; 12. Connector; 121. Clearance groove; 122. Observation hole;

[0037] 20. First support member; 21. First support rod; 22. Base; 221. Annular scale; 23. First bracket; 231. First base plate; 2311. Positioning groove; 232. First side plate; 233. First fastener; 2331. Threaded rod; 2332. Knob; 2333. Flexible component; 24. First movable rod;

[0038] 30. Second support member; 31. Sleeve assembly; 311. Second support rod; 312. Second movable rod; 32. Second bracket; 321. Second base plate; 3211. Positioning boss; 322. Second side plate; 323. Second fastener;

[0039] 40. Sliding block;

[0040] 50. Substrate;

[0041] 101. First axis; 102. Annular groove; 103. Mounting hole.

[0042] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0044] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0045] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0046] Reconfigurable Intelligent Surfaces (RIS) are an emerging technology that utilizes artificial composite materials and specially designed periodic structures to powerfully manipulate electromagnetic and light waves. This technology has broad application prospects in next-generation wireless communications, optical lenses and imaging, radar, and stealth applications.

[0047] At multiple stages of the manufacturing process of smart metasurfaces, performance testing is required to verify the effectiveness of performance indicators such as coverage area, signal strength enhancement, and data transmission rate improvement. However, the devices used for performance testing of smart metasurfaces in related technologies typically require customized testing equipment based on the different operating modes of the smart metasurfaces, resulting in poor versatility.

[0048] Based on their different working methods, smart metasurfaces can be divided into reflective smart metasurfaces and transmissive smart metasurfaces. Since the transmission directions of the signals of the two are quite different, when testing the two, it is usually necessary to design completely different test fixtures and build test environments, which increases costs and reduces testing efficiency.

[0049] Based on this, the inventors provide a new intelligent metasurface testing fixture. By setting two linear guides with a high degree of freedom and using these two linear guides to support the signal transmitter and signal receiver respectively, the intelligent metasurface testing fixture can be adapted to at least the aforementioned two types of intelligent metasurfaces, and has the advantages of stronger versatility and wider applicability.

[0050] Please refer to the following: Figures 1 to 10 This invention provides an intelligent metasurface testing fixture 100, which includes a guide rail assembly 10, a first support member 20, and two second support members 30. The guide rail assembly 10 includes two linear guide rails 11, which can rotate relative to each other with an included angle θ, with 10°≤θ≤350°. The first support member 20 is disposed at the first axis 101 and is used to support the intelligent metasurface antenna 400. The two second support members 30 are respectively disposed on the two linear guide rails 11 and are used to support the signal transmitter 200 and the signal receiver 300, respectively.

[0051] The intelligent metasurface test fixture 100 is used to provide precise positioning for the intelligent metasurface antenna 400, signal transmitter 200 and signal receiver 300 in performance testing, so as to perform performance testing on the intelligent metasurface antenna 400 with different operating modes in the production line.

[0052] The guide rail assembly 10 is a supporting component in the intelligent metasurface testing fixture 100. In these embodiments of the present invention, the guide rail assembly 10 can be used to support the aforementioned first support member 20 and two second support members 30, thereby enabling the signal transmitter 200 and the signal receiver 300 to maintain a relatively stable state during testing and improving testing accuracy.

[0053] The guide rail assembly 10 includes two linear guide rails 11. In these embodiments of the present invention, two independent and identical linear guide rails 11 can be provided. As the name suggests, the linear guide rails 11 extend in a straight line. In some embodiments, the signal transmitter 200 and the signal receiver 300 can be fixed on the two linear guide rails 11 respectively. Correspondingly, in some embodiments, the signal transmitter 200 and the signal receiver 300 can be movably connected to the two linear guide rails 11 respectively, so that the signal transmitter 200 and the signal receiver 300 can move along their respective connected linear guide rails 11, thereby adjusting the distance between the signal transmitter 200 and the smart metasurface antenna 400, and the distance between the signal receiver 300 and the smart metasurface antenna 400.

[0054] In some embodiments of the present invention, when the number of other components used for testing changes, the number of linear guide rails 11 can be increased accordingly. For example, when the testing process requires the simultaneous placement of multiple signal receivers 300, the number of linear guide rails 11 can be increased accordingly to accommodate different numbers of signal receivers 300 and signal transmitters 200. The present invention is illustrated using an example where there are two linear guide rails 11 and one signal transmitter 200 and one signal receiver 300.

[0055] The two linear guide rails 11 can be rotated relative to each other with an included angle θ around a first axis 101. The first axis 101 is a virtual axis, representing the rotation axis of the two linear guide rails 11 when their angle changes. It is understood that the first axis 101 should be perpendicular to the plane containing the rotational trajectories of the two linear guide rails 11 and located at the intersection of the extensions of the two linear guide rails 11 along their lengths or at their connection point.

[0056] The first support member 20 is disposed at the first axis 101, meaning that the first support member 20 is located at the position of the first axis 101, and the direction of the first support member 20 is parallel to the first axis 101. That is, in some embodiments, the first support member 20 for supporting the smart metasurface antenna 400 can be disposed at the intersection of the extension lines of the two linear guide rails 11 along their lengths; or, in some embodiments, the first support member 20 for supporting the smart metasurface antenna 400 can be disposed at the connection point of the two linear guide rails 11.

[0057] Based on this, when conducting intelligent metasurface testing, the signal transmission direction of the signal transmitter 200 can be set to be parallel to the length direction of a straight guide rail 11, and the signal receiving direction of the signal receiver 300 can be set to be parallel to the length direction of another straight guide rail 11, thereby realizing intelligent metasurface testing.

[0058] In these embodiments of the present invention, the included angle θ of the two linear guide rails 11 is 10°≤θ≤350°, so that the intelligent metasurface test fixture 100 can be used to test the intelligent metasurface antenna 400 in different operating modes.

[0059] For example, in some embodiments, the positional relationship between the two linear guide rails 11 can be adjusted so that the included angle θ between the two linear guide rails 11 is 10°≤θ≤90° or 270°≤θ≤350°. In this case, the included angle between the two linear guide rails 11 is an acute angle or a right angle, so that the signal transmitter 200 and the signal receiver 300 are located on the same side of the smart metasurface antenna 400, thereby enabling performance testing of the reflective smart metasurface antenna 400. In some embodiments, the included angle θ between the two linear guide rails 11 can also be adjusted so that the included angle between the two linear guide rails 11 is 90°≤θ≤270°. In this case, the included angle between the two linear guide rails 11 is an obtuse angle or a right angle, so that the signal transmitter 200 and the signal receiver 300 are located on different sides of the smart metasurface antenna 400, thereby enabling performance testing of the transmissive smart metasurface antenna 400.

[0060] In summary, the technical solution of this invention, by setting the guide rail assembly 10 to include two linear guide rails 11, and the two linear guide rails 11 can rotate relative to each other with an included angle θ around the first axis 101, and controlling the value of θ to be: 10°≤θ≤350°, and two second support members 30 for supporting the signal transmitter 200 and the signal receiver 300 are respectively set on the two linear guide rails 11, and the first support member 20 is set at the first axis 101, thereby changing the value of the included angle θ between the two linear guide rails 11, and changing the relationship between the signal transmitter 200 and the signal receiver 300 and the smart metasurface antenna 4 during the test. The positional relationship between the two linear guides 11 allows for the following: when the smart metasurface antenna 400 under test is a reflective smart metasurface antenna, the included angle θ between the two linear guides 11 can be adjusted to 10°≤θ≤90° or 270°≤θ≤350° to test the performance of the reflective smart metasurface antenna; when the smart metasurface antenna 400 under test is a transmissive smart metasurface antenna, the included angle θ between the two linear guides 11 can be adjusted to 90°≤θ≤270° to test the performance of the transmissive smart metasurface antenna, thereby improving the versatility of the smart metasurface test fixture 100.

[0061] In some embodiments, two linear guides 11 may be movably connected.

[0062] Two linear guide rails 11 are movably connected and can rotate relative to each other around a first axis 101 to adjust the included angle θ. A possible implementation is that the two linear guide rails 11 are directly rotatably connected. In this case, the two linear guide rails 11 can rotate along their respective axes of rotation, and the first axis 101 is the axis of rotation for both linear guide rails 11. The two linear guide rails 11 can rotate relative to each other along these axes to adjust their angle θ.

[0063] In some embodiments, the two linear guide rails 11 can be detachably connected. For example, the two linear guide rails 11 can be directly connected and fastened by at least one fastener such as a screw or bolt, so that the two linear guide rails 11 can maintain a certain included angle θ. When it is necessary to adjust the included angle θ of the two linear guide rails 11, the fasteners can be removed so that the two can rotate relative to each other along the first axis 101. After the angle θ is adjusted, the fasteners can be used to fix the two together again.

[0064] In some embodiments, two linear guide rails 11 are spaced apart, and the first axis 101 is located at the intersection of the lines of the two linear guide rails 11. Two second support members 30 are slidably connected to the two linear guide rails 11 respectively.

[0065] In these embodiments of the present invention, since the linear guide 11 itself has a certain width, when two linear guides 11 are directly connected, the adjustable range of the included angle between the two linear guides 11 will be affected and reduced due to the limitation of the width of the linear guide 11 itself.

[0066] In these embodiments of the present invention, by setting two linear guide rails 11 at intervals, the length of at least one linear guide rail 11 can be relatively lengthened, thereby reducing the influence of the width of the linear guide rail 11 itself on the angle adjustment range of the two, and enabling the two linear guide rails 11 to obtain a wider angle adjustment range.

[0067] In these embodiments of the present invention, the first axis 101 is located at the intersection of the straight lines containing the two linear guide rails 11, meaning that the first axis 101 intersects the straight lines containing the two linear guide rails 11, so that at least one of the two linear guide rails 11 can adjust its angle within the plane containing the two linear guide rails with the first axis 101 as the axis of rotation.

[0068] For example, in some embodiments, the projection of the first axis 101 along the axis may not fall on either linear guide rail 11. According to the foregoing, the first axis 101 should be located at the intersection of the extensions of the straight lines of the two linear guide rails 11, so that at least one linear guide rail 11 can be angled with the first axis 101 as the pivot. Alternatively, in some embodiments, the projection of the first axis 101 along the axis may fall on a straight guide rail 11. In this case, since the two linear guide rails 11 are spaced apart, the extension of the straight line of the other linear guide rail 11 should point to the first axis 101.

[0069] In other words, in these embodiments of the present invention, by setting the two linear guides 11 at intervals, the aspect ratio of at least one linear guide 11 can be increased, thereby reducing the limitation of the width of the linear guide 11 on the rotation angle, and allowing a wider angle adjustment range between the two linear guides 11.

[0070] The two second support members 30 are slidably connected to the two linear guide rails 11 respectively, so that the two second support members 30 can adjust the distance between themselves and the first support member 20 by sliding along the two linear guide rails 11 respectively, thereby adjusting the distance between the signal transmitter 200 and the signal receiver 300 and the smart metasurface antenna 400 respectively, so as to adapt to different test conditions.

[0071] One possible implementation is that the two second support members 30 are themselves provided with a structure that can be locked onto the linear guide rail 11. During installation, the two second support members 30 can be directly locked onto the linear guide rail 11. Alternatively, the second support members 30 can be connected to other components that can slide along the linear guide rail 11, so that they can slide onto the linear guide rail 11 under the drive of the other components.

[0072] In some embodiments, the guide rail assembly 10 further includes a connector 12, which is connected to a straight guide rail 11 and movably connected to a first support member 20.

[0073] The function of the connector 12 is to connect the straight guide rail 11 to the first support member 20, so as to improve the structural consistency of the guide rail assembly 10 in the embodiment where the two straight guide rails 11 are in a spaced-out state, thereby improving the testing accuracy of the intelligent metasurface test fixture 100.

[0074] The connector 12 may be, but is not limited to, a block structure, a strip structure perpendicular to the first axis 101, or a plate structure. In these embodiments of the present invention, only the example of the connector 12 being a plate structure is described and illustrated.

[0075] The connector 12 is connected to a linear guide rail 11. In some embodiments, a portion of the structure of the connector 12 may be fixedly connected to one of the two linear guide rails 11 to further improve the structural consistency and stability of the guide rail assembly 10. In some embodiments, a portion of the structure of the connector 12 may be detachably connected to one of the two linear guide rails 11 to facilitate subsequent maintenance and replacement of the guide rail assembly 10.

[0076] Meanwhile, the connector 12 is also movably connected to the first support member 20. In some embodiments, a rotating shaft can be provided between the connector 12 and the first support member 20 so that the connector 12 and the first support member 20 can be rotatably connected through the rotating shaft. Alternatively, in some embodiments, the connector 12 and the first support member 20 can be detachably connected by at least one fastener such as a screw or bolt, so that the relative positional relationship between the connector 12 and the first support member 20 can be adjusted when the fastener is detached, and the relative positional relationship between the connector 12 and the first support member 20 can be locked when the fastener is tightened.

[0077] In these embodiments of the present invention, the connector 12 can be disposed at one end of the linear guide 11 along its length direction, and the connector 12 can be regarded as an extension of the linear guide 11 along its length direction, so that the length-to-width ratio of the linear guide 11 is larger, which can reduce the reduction in the adjustable range of the included angle between the two linear guides 11 due to the width of the linear guide 11 itself.

[0078] In some embodiments, the first support member 20 includes a first support rod 21 with the first axis 101 as the axis, and the connector 12 is provided with a relief groove 121, wherein the first support rod 21 abuts against the inner wall of the relief groove 121.

[0079] The first support rod 21 is positioned on the first axis 101, meaning that the first support rod 21 is located at the first axis 101 so that the first support member 20 is the rotation axis of the two linear guide rails 11. In this way, regardless of whether the included angle between the two linear guide rails 11 is acute or obtuse, the signal transmission direction of the signal transmitter 200 always points to the first support member 20.

[0080] In some embodiments of the present invention, the first support rod 21 can be extended and retracted axially to make the axial dimension of the first support member 20 adjustable to adapt to the axial dimensions of the signal transmitter 200 and the signal receiver 300, so that the signal transmitter 200, the smart metasurface antenna 400 and the signal receiver 300 are at the same horizontal height; in some embodiments of the present invention, the first support rod 21 can also be configured to rotate about the first axis 101 to adjust the angle between the signal transmission direction of the signal transmitter 200 and the smart metasurface antenna 400.

[0081] The function of the clearance groove 121 is to allow the first support rod 21 to pass, so that the connector 12 can also rotate about the first axis 101 during the operation of the intelligent metasurface testing fixture 100. In these embodiments of the present invention, the inner wall of the clearance groove 121 can be set to be arc-shaped in the cross-section perpendicular to the first axis 101. In this case, by setting the first support rod 21 to abut against the inner wall of the clearance groove 121, the error of the connector 12 rotating about the first axis 101 can be further reduced, and the reliability is better.

[0082] In some embodiments, the first support member 20 further includes a base 22, a first support rod 21 connected to the base 22, and the base 22 is provided with an annular scale 221 with the first axis 101 as the center line; the connector 12 is detachably connected to the base 22 and includes an observation hole 122, and at least a portion of the observation hole 122 overlaps with the annular scale 221 in a direction parallel to the first axis 101.

[0083] The base 22 is a supporting member of the first support member 20 and is used to connect with other components of the intelligent metasurface testing fixture 100.

[0084] The base 22 is provided with an annular scale 221 with the first axis 101 as the center line. The function of the annular scale 221 is to read the degree of rotation of the linear guide rail 11 connected to the connector 12 relative to the first support rod 21.

[0085] The annular scale 221 is centered on the first axis 101. In these embodiments of the invention, the first support rod 21 is positioned at the centerline of the annular scale 221; in other words, the annular scale 221 is arranged around the first support rod 21 with the first support rod 21 as its centerline. Thus, during the setup of the intelligent metasurface testing fixture 100, the linear guide rail 11 not connected to the connector 12 can be positioned at the 0° mark on the annular scale 221. When the other linear guide rail 11 changes angle around the first axis 101 via the connector 12, the angle between the linear guide rail 11 and the other linear guide rail 11 can be determined by reading the annular scale 221.

[0086] The connector 12 includes an observation hole 122, which means that in these embodiments of the invention, the connector 12 and the base 22 partially overlap in a direction parallel to the first axis 101. Thus, the connector 12 will cover at least a portion of the annular scale 221. The observation hole 122 is used to expose at least a portion of the annular scale 221 so that the tester can read the angle value between the two linear guides 11.

[0087] Therefore, the observation hole 122 can be set to overlap with at least a portion of the annular scale 221 in a direction parallel to the first axis 101, so that at least a portion of the annular scale 221 is exposed and not blocked by the connector 12, so as to facilitate reading the included angle between the two linear guides 11.

[0088] In these embodiments of the present invention, the connector 12 is detachably connected to the base 22. A possible implementation is that the connector 12 has a plate-like structure and overlaps with the base 22. An annular groove 102 with the first axis 101 as its central axis is provided on the connector 12, and a mounting hole 103 is provided on the base 22. The projection of the mounting hole 103 in a direction parallel to the first axis 101 falls within the annular groove 102. Thus, when the linear guide 11 is adjusted to the angle between itself and another linear guide 11 via the connector 12, the connector 12 and the base 22 can be secured by sequentially passing screws, bolts, or other fasteners through the annular groove 102 and the mounting hole 103.

[0089] It should be noted that in some implementations, the number of mounting holes 103 can be multiple, so that when the connector 12 rotates relative to the base 22, at least one mounting hole 103 corresponds to the annular groove 102 in a direction parallel to the first axis 101.

[0090] In some embodiments of the present invention, the annular groove 102 may be provided on the base 22, and the mounting hole 103 may be provided on the connector 12; or, the annular groove 102 may be provided on both the base 22 and the connector 12, so that after the linear guide rail 11 completes the angle adjustment with the other linear guide rail 11 through the connector 12, the two can be fixed by fasteners penetrating the connector 12 and the base 22.

[0091] In some embodiments, the first support member 20 further includes a first bracket 23, which includes a first base plate 231, two first side plates 232 and a plurality of first fasteners 233. The first base plate 231 is connected to the first support rod 21, and the two first side plates 232 are connected to the first base plate 231 and are disposed opposite to each other. The plurality of first fasteners 233 are disposed on the first side plates 232 and can be advanced along the relative arrangement direction of the two first side plates 232 to clamp the smart metasurface antenna 400.

[0092] The first bracket 23 is the component in the first support member 20 that actually clamps the smart metasurface antenna 400.

[0093] In these embodiments of the present invention, the first support 23 includes a first base plate 231, two first side plates 232 and a plurality of first fasteners 233, wherein the first base plate 231 and the two first side plates 232 together form a semi-enclosed frame structure, and the plurality of first fasteners 233 are disposed on the two first side plates 232 and can be advanced along the relative arrangement direction of the two first side plates 232 for clamping the smart metasurface antenna 400.

[0094] This setup can accommodate smart metasurface antennas 400 of different sizes. During the clamping process of the smart metasurface antenna 400, the smart metasurface antenna 400 can be first placed and supported on the first base plate 231, and the centering mark line set on the first base plate 231 can be used to center the smart metasurface antenna 400 on the first base plate 231. Then, by controlling the multiple first fasteners 233 on the two first side plates 232 on both sides to move inward, the smart metasurface antenna 400 can be clamped and fixed. This can accommodate smart metasurface antennas 400 of various sizes.

[0095] In some embodiments of the present invention, a positioning groove 2311 may be provided at the first base plate 231. The positioning groove 2311 is provided on the surface of the first base plate 231 near the interior of the semi-enclosed structure, so that in the initial stage of placement of the smart metasurface antenna 400, one end face of the smart metasurface antenna 400 can be inserted into the positioning groove 2311 to achieve the effect of initial positioning.

[0096] In these embodiments of the present invention, the first fastener 233 can be connected to the first side plate 232 by a threaded connection, and the first fastener 233 can be moved in and out by rotating clockwise or counterclockwise.

[0097] In some embodiments of the present invention, the first fastener 233 may include a threaded rod 2331, a knob 2332 disposed at one axial end of the threaded rod 2331, and a flexible member 2333 disposed at the other axial end of the threaded rod 2331. In this way, when clamping the smart metasurface antenna 400, the tester can rotate the threaded rod 2331 along its axial direction by rotating the knob 2332. At the same time, the first fastener 233 can be moved in and out by the threaded engagement between the threaded rod 2331 and the first side plate 232. The flexible member 2333 is used to contact the side wall of the smart metasurface antenna 400 to clamp and fasten the smart metasurface antenna 400.

[0098] In some embodiments of the present invention, the first fasteners 233 can be paired in pairs, and each pair of first fasteners 233 can be respectively set on two first side plates 232, with each pair of first fasteners 233 corresponding along the relative setting direction of the two first side plates 232, so that when the tester uses the first fasteners 233 to clamp the smart metasurface antenna 400, the force on both sides of the smart metasurface antenna 400 is more uniform, and the reliability is higher.

[0099] In some embodiments, the first support member 20 further includes a first bracket 23 and a first movable rod 24, the first movable rod 24 being connected to the first bracket 23; the first support rod 21 is a hollow rod, the first movable rod 24 is coaxial with the first support rod 21, and is slidably and / or rotatably connected to the first support rod 21 about the first axis 101.

[0100] The first movable rod 24 is connected to the first bracket 23. In a possible implementation, the first movable rod 24 and the first base plate 231 of the first bracket 23 are fixedly connected by adhesive, welding or even integral molding. Alternatively, in some embodiments, the first movable rod 24 and the first base plate 231 of the first bracket 23 can be detachably connected by threaded connection, snap-fit ​​connection or other means. The present invention does not limit this.

[0101] The first support rod 21 is a hollow rod, and the first movable rod 24 is coaxial with the first support rod 21 and is slidably and / or rotatably connected to the first support rod 21 about the first axis 101.

[0102] In some embodiments, the first movable rod 24 and the first support rod 21 can be slidably connected along the axial direction, so that the height of the first bracket 23 in the direction parallel to the first axis 101 can be adjusted, making the height of the smart metasurface antenna 400 in the direction parallel to the first axis 101 adjustable. In this case, the height dimension of the smart metasurface antenna 400 can be read by setting an axially arranged scale on the first movable rod 24.

[0103] In some embodiments, the first movable rod 24 and the first support rod 21 can be axially rotatably connected, thereby adjusting the angle between the smart metasurface antenna 400 and the signal transmitter 200. Accordingly, an angle scale can be provided on the end face of the first support rod 21 near the first bracket 23 to read the rotation angle of the smart metasurface antenna 400.

[0104] In some embodiments, the first movable rod 24 can be configured to slide axially with the first support rod 21 while rotating, so as to simultaneously possess the aforementioned two functions and further improve the accuracy of the test.

[0105] In some embodiments, the intelligent metasurface testing fixture 100 further includes a sliding block 40, which is slidably connected to the linear guide rail 11 and connected to the first support member 20 and the second support member 30.

[0106] The sliding block 40 is a component used to connect the aforementioned first support member 20 and second support member 30 to the linear guide rail 11. The sliding block 40 can be slidably connected to the linear guide rail 11; or the sliding block 40 can be detachably connected to the linear guide rail 11.

[0107] In these embodiments of the present invention, a sliding block 40 for connecting the first support member 20 to the linear guide rail 11 can be detachably connected to the linear guide rail 11, so that the sliding block 40 can be fixed at a characteristic position of the linear guide rail 11 using fasteners, thereby improving the stability of the intelligent metasurface test fixture 100 during testing. At the same time, a sliding block 40 for connecting the second support member 30 to the linear guide rail 11 can be slidably connected and / or detachably connected to the linear guide rail 11, so that the distance between the second support member 30 and the first support member 20 can be adjusted by the sliding block 40, thereby making the distance between the signal transmitter 200 and the signal receiver 300 and the intelligent metasurface antenna 400 adjustable during testing.

[0108] The sliding block 40 is connected to the first support member 20 and the second support member 30. A possible implementation is that the sliding block 40 can be fixedly connected to the first support member 20 and the second support member 30 by adhesive bonding, welding, or even integral molding; alternatively, in some embodiments, the sliding block 40 can be detachably connected to the first support member 20 and the second support member 30 by fasteners. This invention does not limit this aspect.

[0109] In some embodiments, the first support member 20 is fixed to the end of a straight guide rail 11 by a sliding block 40. When the two straight guide rails 11 are on the same straight line, the minimum distance between the ends of the two straight guide rails 11 is s, the dimension of the sliding block 40 along the width direction of the straight guide rail 11 is a, and the dimension of the sliding block 40 along the length direction of the straight guide rail 11 is b; then the values ​​of s, a, and b satisfy the following formula:

[0110]

[0111] Please refer to the following for details. Figure 11 and Figure 12 In these embodiments of the present invention, the minimum distance s between the ends of the two linear guide rails 11 when they are on the same straight line can be determined by the above formula, so as to ensure that the two linear guide rails 11 do not interfere with each other when the angle changes.

[0112] Where L can be considered as the radius of rotation when the straight guide rail 11 and the first axis 101 are the rotating shafts, please refer to the following for details. Figure 12 It can be known that when the value of L is greater than Lmin, the two linear guides 11 will not interfere with each other when their angles change. At this time, according to the Pythagorean theorem, the value of Lmin is... Depend on Figure 11 As can be seen, s = Lb / 2. Therefore, when the value of s satisfies the aforementioned formula, the two linear guide rails 11 will not interfere with each other when the angle changes.

[0113] In this way, the minimum value of the distance s between the two linear guides 11 can be obtained by using the above formula based on the dimension a of the slider 40 along the width direction of the linear guide 11 and the dimension b of the slider 40 along the length direction of the linear guide 11.

[0114] In these embodiments of the present invention, the minimum value of the distance s between the two linear guide rails 11 is obtained by the aforementioned formula, which can minimize the interference of the size of the sliding block 40 when the two linear guide rails 11 are adjusted at an angle, so that the two linear guide rails 11 can obtain a greater degree of freedom in angle adjustment.

[0115] Meanwhile, in these embodiments of the present invention, the minimum included angle θ between the two linear guides 11 during angle adjustment can be calculated using the following formula:

[0116]

[0117] Where w is the width of the linear guide 11, a is the dimension of the slider 40 along the width direction of the linear guide 11, and b is the dimension of the slider 40 along the length direction of the linear guide 11.

[0118] Please participate specifically. Figure 13 , Figure 13 The diagram illustrates the positional relationship of the intelligent metasurface testing fixture 100 provided by this invention when it is in the minimum θ condition. In the aforementioned formula, since line segment AC = L × sinθ, line segment AB = w / 2, and line segment BC = DC × cosθ = a / 2 × cosθ; and since line segment AC = line segment AB + line segment BC, we can derive w / 2 + a / 2 × cosθ = (s + b / 2) × sinθ, thus obtaining the aforementioned formula.

[0119] In this way, during the design phase of the intelligent metasurface testing fixture 100, the dimensions a of the sliding block 40 along the width direction of the linear guide 11, the dimensions b of the sliding block 40 along the length direction of the linear guide 11, and the width w of the linear guide 11 can be designed according to the value of the minimum included angle θ between the two linear guides 11 that need to be adjusted during the experiment. This allows the linear guide 11 and the sliding block 40 to have the maximum adjustable angle range while meeting the support requirements and experimental needs.

[0120] In some embodiments, the second support member 30 includes a sleeve rod assembly 31 and a second bracket 32. The sleeve rod assembly 31 includes a second support rod 311 and a second movable rod 312. The second support rod 311 is a hollow rod. The second movable rod 312 is coaxial with the second support rod 311 and is slidably connected to the second support rod 311. The second bracket 32 ​​is connected to the second movable rod 312.

[0121] Similar to the function of the first support member 20, the second support member 30 provides support for the signal transmitter 200 or the signal receiver 300. The sleeve assembly 31 supports the second bracket 32. In these embodiments of the invention, the sleeve assembly 31 includes a second support rod 311 and a second movable rod 312 coaxially arranged, allowing the second movable rod 312 to slide relative to the second support rod 311 axially, adjusting the height of the second bracket 32 ​​in the direction parallel to the first axis 101, thereby adjusting the height of the signal transmitter 200 or the signal receiver 300 disposed in the second bracket 32.

[0122] It should be noted that, since the second bracket 32 ​​is used to support the signal transmitter 200 or the signal receiver 300, it is necessary to keep the signal transmission direction of the signal transmitter 200 and the signal reception direction of the signal receiver 300 parallel to the linear guide rail 11. Therefore, it is necessary to ensure that the second movable rod 312 and the second support rod 311 are non-rotatable. A possible implementation is that the hollow cavity of the second support rod 311 can be set to have a non-circular shape such as a rectangle, triangle, or ellipse along its cross-section perpendicular to the first axis 101. Alternatively, some anti-rotation structures can be provided, such as grooves or planes set parallel to the first axis 101. In this case, the outer surface shape of the second movable rod 312 can be matched with the second support rod 311, so that the second movable rod 312 can only slide within the hollow cavity of the second support rod 311 and cannot rotate.

[0123] The second bracket 32 ​​is connected to the second movable rod 312. A possible implementation is that the second bracket 32 ​​and the second movable rod 312 can be fixedly connected by adhesive, welding, or even integral molding; alternatively, in some embodiments, the second bracket 32 ​​and the second movable rod 312 can be detachably connected by fasteners. This invention does not limit the scope of the connection.

[0124] In some embodiments of the present invention, a scale can also be provided on the outer wall surface of the second movable rod 312 in a direction parallel to the first axis 101, so that the tester can obtain the height of the signal transmitter 200 or the signal receiver 300 by reading the scale value. This is beneficial to adjust the signal transmitter 200 and the signal receiver 300 to be consistent with the height of the smart metasurface antenna 400 before the test begins, thereby improving the accuracy of the test.

[0125] In some embodiments, the second bracket 32 ​​includes a second base plate 321, two second side plates 322 and a second fastener 323. The second base plate 321 is connected to the second movable rod 312, and the two second side plates 322 are connected to the second base plate 321 and are disposed opposite to each other. The second fastener 323 is slidably connected to the two second side plates 322 and is disposed opposite to the second base plate 321 in a direction parallel to the first axis 101.

[0126] The second base plate 321 and the two second side plates 322 are used together to define the structure of the second support 32. The two second side plates 322 are connected to the second base plate 321 and are arranged opposite to each other. In a possible implementation, the two second side plates 322 are respectively arranged at opposite ends of the second base plate 321 and are respectively connected to the second base plate 321, thus forming a semi-enclosed frame structure.

[0127] The function of the second base plate 321 is to support the signal transmitter 200 or the signal receiver 300. In addition to supporting the second base plate 321, the two second side plates 322 can also be used to place the second fasteners 323.

[0128] In these embodiments of the present invention, the second fastener 323 is slidably connected to the two second side plates 322 and is disposed opposite to the second base plate 321 in a direction parallel to the first axis 101. This means that the second fastener 323 adjusts the distance between itself and the second base plate 321 through the slidable connection with the two second side plates 322, thereby working with the second base plate 321 to clamp and fix the signal transmitter 200 or the signal receiver 300.

[0129] In these embodiments of the present invention, a positioning boss 3211 can be provided at the second base plate 321. This positioning boss 3211 is located on the surface of the second base plate 321 near the interior of the semi-enclosed structure. In this way, by providing a groove matching the positioning boss 3211 on the bottom surface of the signal transmitter 200 or signal receiver 300, an initial positioning effect can be achieved during the initial installation of the signal transmitter 200 or signal receiver 300. In some embodiments of the present invention, the initial positioning effect can also be achieved by providing a groove at the second base plate 321 and providing a boss matching the groove on the bottom surface of the signal transmitter 200 or signal receiver 300.

[0130] It should be noted that, in some embodiments of the present invention, a centering mark line may also be provided at the second base plate 321. During the clamping process of the signal transmitter 200 or the signal receiver 300, the signal transmitter 200 or the signal receiver 300 may be placed and supported at the second base plate 321 first, and the signal transmitter 200 or the signal receiver 300 may be centered at the second base plate 321 by using the centering mark line provided at the second base plate 321. Then, the second fastener 323 may be moved closer to the second base plate 321 to clamp and fix it. In this way, signal transmitters 200 or signal receivers 300 of various sizes can be adapted.

[0131] In some embodiments, both linear guides 11 are provided with a spacing scale 111.

[0132] The spacing scale 111 marks the distance between the signal transmitter 200 or signal receiver 300 and the smart metasurface antenna 400, which are mounted on the linear guide rail 11. Of course, in these embodiments of the invention, the first support member 20 for mounting the smart metasurface antenna 400 is also mounted on the linear guide rail 11.

[0133] The spacing scale 111 can be set along the length of the two linear guide rails 11 respectively. One possible implementation is that the spacing scale 111 is directly formed on the linear guide rails 11 by means of engraving, painting or other methods. In this way, the impact on the width dimension of the linear guide rails 11 can be reduced, so that the two linear guide rails 11 can have a larger angle adjustment range when the angle changes. In some embodiments, the spacing scale 111 can also be set as a solid linear scale and connected to the linear guide rails 11 by means of welding, gluing or other methods.

[0134] In some embodiments, the intelligent metasurface testing fixture 100 further includes a substrate 50, and the guide rail assembly 10 is connected to the substrate 50.

[0135] The substrate 50 serves to improve the structural consistency of the intelligent metasurface testing fixture 100 and enhance the stability of each component, facilitating the overall handling of the intelligent metasurface testing fixture 100.

[0136] The guide rail assembly 10 is connected to the base plate 50. In a possible implementation, each linear guide rail 11 in the guide rail assembly 10 can be connected to the base plate 50 in a detachable manner; or, in some embodiments, a track for at least one linear guide rail 11 to rotate can be provided on the base plate 50 so that the linear guide rail 11 provided on the track can rotate along the track to adjust the included angle between the two linear guide rails 11.

[0137] In these embodiments of the present invention, for linear guides 11 of the same size, after each linear guide 11 is installed on the substrate 50, the consistency of each linear guide 11 in the height direction can be maintained, which is conducive to the smooth progress of the test and improves the accuracy of the test data.

[0138] In some embodiments, the guide rail assembly 10, the first support member 20, and the second support member 30 may all be made of non-metallic materials. That is, the intelligent metasurface testing fixture 100 is made of non-metallic materials to reduce the influence of the intelligent metasurface testing fixture 100 itself on microwave signals.

[0139] Exemplary examples in these embodiments of the present invention may be provided with the guide rail assembly 10, the first support member 20, and the second support member 30 made of plastic materials such as acrylic, acrylonitrile butadiene styrene (ABS), polycarbonate (PC), or nylon. Of course, in addition to the aforementioned plastic materials, the guide rail assembly 10, the first support member 20, and the second support member 30 may also be made of other non-metallic materials to reduce the reflection of microwave signals caused by the use of metallic materials and improve the accuracy of detection.

[0140] This invention also provides an intelligent metasurface testing device 1000, which includes a signal transmitter 200, a signal receiver 300, and an intelligent metasurface testing fixture 100 as provided in any of the foregoing embodiments. The signal transmitter 200 and the signal receiver 300 are respectively disposed on two second support members 30. When intelligent metasurface testing is required, intelligent metasurface antennas 400 of different specifications can be respectively installed on the first support member 20 to test the performance of various intelligent metasurface antennas 400.

[0141] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. An intelligent metasurface testing fixture, characterized in that, include: The guide rail assembly includes two linear guide rails, which can rotate relative to each other with an included angle θ, and the value of θ satisfies: 10°≤θ≤350°; The first support member is disposed at the first axis and is used to support the smart metasurface antenna; Two second support members are respectively disposed on the two linear guide rails and are used to support the signal transmitter and the signal receiver respectively.

2. The intelligent metasurface testing fixture as described in claim 1, characterized in that, The two linear guide rails are spaced apart, and the first axis is located at the intersection of the lines of the two linear guide rails. The two second support members are slidably connected to the two linear guide rails respectively.

3. The intelligent metasurface testing fixture as described in claim 2, characterized in that, The guide rail assembly further includes a connector, which is connected to one of the linear guide rails and movably connected to the first support member.

4. The intelligent metasurface testing fixture as described in claim 3, characterized in that, The first support member includes a first support rod with the first axis as the axis, and the connector is provided with a relief groove, wherein the first support rod abuts against the inner wall of the relief groove.

5. The intelligent metasurface testing fixture as described in claim 4, characterized in that, The first support member also includes a base, the first support rod is connected to the base, and the base is provided with an annular scale with the first axis as the center line; The connector is detachably connected to the base and includes an observation hole, which overlaps with at least a portion of the annular scale in a direction parallel to the first axis.

6. The intelligent metasurface testing fixture as described in claim 4, characterized in that, The first support also includes a first bracket, which includes a first base plate, two first side plates and a plurality of first fasteners. The first base plate is connected to the first support rod, and the two first side plates are connected to the first base plate and are arranged opposite to each other. Multiple first fasteners are disposed on the first side plate and can be advanced along the relative arrangement direction of the two first side plates to clamp the smart metasurface antenna.

7. The intelligent metasurface testing fixture as described in claim 4, characterized in that, The first support member further includes a first bracket and a first movable rod, wherein the first movable rod is connected to the first bracket; The first support rod is a hollow rod, and the first movable rod is coaxial with the first support rod and is slidably and / or rotatably connected to the first support rod about the first axis.

8. The intelligent metasurface testing fixture as described in any one of claims 1 to 7, characterized in that, The intelligent metasurface testing fixture also includes: A sliding block is slidably connected to the linear guide rail and connected to the first support member and the second support member.

9. The intelligent metasurface testing fixture as described in claim 8, characterized in that, The first support member is fixed to the end of one of the linear guides by the sliding block. When the two linear guides are in the same straight line, the minimum distance between the ends of the two linear guides is s. The dimension of the sliding block along the width direction of the linear guide is a, and the dimension of the sliding block along the length direction of the linear guide is b. The values ​​of s, a, and b satisfy the following formula:

10. The intelligent metasurface testing fixture according to any one of claims 1 to 7, characterized in that, The second support member includes a sleeve rod assembly and a second bracket. The sleeve rod assembly includes a second support rod and a second movable rod. The second support rod is a hollow rod, and the second movable rod is coaxial with the second support rod and slidably connected to the second support rod. The second bracket is connected to the second movable rod.

11. The intelligent metasurface testing fixture as described in claim 10, characterized in that, The second bracket includes a second base plate, two second side plates and a second fastener. The second base plate is connected to the second movable rod, and the two second side plates are connected to the second base plate and arranged opposite to each other. The second fastener is slidably connected to the two second side plates and is positioned opposite the second base plate in a direction parallel to the first axis.

12. The intelligent metasurface testing fixture according to any one of claims 1 to 7, characterized in that, The guide rail assembly, the first support member, and the second support member are all made of non-metallic materials.

13. An intelligent metasurface testing device, characterized in that, It includes a signal transmitter, a signal receiver, and an intelligent metasurface testing fixture as described in any one of claims 1 to 12, wherein the signal transmitter and the signal receiver are respectively disposed on two second support members.

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